Remove a race condition. If this functions is called by the progress thread then it does not have to

add an event, it can call the spawn function directly. This will avoid it standing on the condition who 
will never get released.

This commit was SVN r7428.

orte/mca/pls/rsh/pls_rsh_module.c

@@ -995,14 +995,18 @@ static int orte_pls_rsh_launch_threaded(orte_jobid_t jobid)
     OBJ_CONSTRUCT(&stack, orte_pls_rsh_stack_t);
 
     stack.jobid = jobid;
-    opal_evtimer_set(&event, orte_pls_rsh_launch_cb, &stack);
-    opal_evtimer_add(&event, &tv);
+    if( opal_event_progress_thread() ) {
+        stack.rc = orte_pls_rsh_launch( jobid );
+    } else {
+        opal_evtimer_set(&event, orte_pls_rsh_launch_cb, &stack);
+        opal_evtimer_add(&event, &tv);
 
-    OPAL_THREAD_LOCK(&stack.mutex);
-    while (stack.complete == false) {
-        opal_condition_wait(&stack.cond, &stack.mutex);
+        OPAL_THREAD_LOCK(&stack.mutex);
+        while (stack.complete == false) {
+            opal_condition_wait(&stack.cond, &stack.mutex);
+        }
+        OPAL_THREAD_UNLOCK(&stack.mutex);
     }
-    OPAL_THREAD_UNLOCK(&stack.mutex);
     OBJ_DESTRUCT(&stack);
     return stack.rc;
 }